Pickup baler



Aug. 18, 1942. I E. v. BARKER P ICKUP BALER Original Filed Nov. 2, 19393 Sheets-Sheet 1 I A V A 3 IIIIIIIIIIIIII// I m/motor Enos V. BARKER Akt rnys Aug. 18, 1942. E. v. BARKER PICKUP BALER Original Filed Nov. 2,1959 5 Sheets-Sheet 2 inventor ERos v. BARKER b 3 Yr v4-5? by ms aw 8v3%: MY

Auornzys Aug. 18, 1942. E. v. BARKER PICKUP'BALER Original Filed Nov. 2,1959 3 Sheets-Sheet 3 hm/mnlor ERos \J BARKER the operation of liftingthe hay sion chamber by the plunger.

Patented Aug. 1 8, l 9 42 UNITED s'm'ras r NT orgie- PICKUP BALEB OhioCultivator Co corporation of Ohio Original application November 2, 1939,Serial No.

302,579. Divided and this application June 19, 1940, Serial No. 341,224

. 7 Claims.

smaller in dimensions so that it is more easily handled in the field andis stored in a smaller space; and at the same time, the improved balerof my invention is lighter in weightthan pick-up balers heretoforeemployed and, in addition, consumes less power by reason of theelimination of up to the top of the baler.

Another object of my invention is to devise a pick-up baler having aside feed, the feeding device feeding the hay or likematerial into theside of the present chamber rather than into the top thereof as has beencommon heretofore. The feeding of the baler from the side isadvantageous in that it assures a more uniform bale on the top andbottom and in that it simplifies the construction of the machine,thereby rendering it lighter and more economical to build and at thesame time saves thepower required to lift the hay in order to feed itfrom the top.

It is a further object to provide a side loader which eliminates thelong inclined loading platform which has heretofore been used in the artwith more Or less unsuccessful results. By eliminating the inclinedelevating conveyor of the prior art, it is possible with the instantinvention to fold the side loader into a compact position by elevatingit on a hinge at the side of the machine at one end of the side loaderinto a vertical position.

, It is a further object to provide a side loader that is mounted uponsuitable wheelsat adjustable distances above the surface of the groundin 1 which side loader feeding fingers pass between light weight stripson to a transverse feeding platform that easily feeds the hay towardsshearing position where it is sheared in accurate increments prior tobeing moved into the compres- Another object is to devise a balerwherein the compressing plunger is advanced relatively slowly and isretracted at relatively high speed, it being allowed to dwell atsubstantially its retracted position for a considerable period of timeso as to allow the feeding mechanism to feed in a greater charge of hayor the like preparatory-t0 the forward stroke of the plunger; this isaccomplished by the use of a special linkage for moving the pressingplunger which linkage is designed to give improved results.

Another object is to devise a, side-fed pressing chamber which isprovided with shearing blades on its side for cutting oil the hayquickly and accurately as the plunger head passes by the forward edge ofthe feed opening of the feeding chamber. a

- It is an object of this invention to provide a side feed with shearingmechanism operating with a compression plunger so that the materialbeing,v fed in through the side of the chamber is accurately sheared,eliminating thenecessity of repeated packlngs'of the hay in the chamberbefore the spacer block can be dropped.-

Still another object is to eliminate the feed h arm which has been usedonbalers heretofore devised, thereby simplifying the construction andlowering the cost of repairs.

Another object is to provide a fully automatic feeder for feeding thebaler, thereby eliminating. the necessity of having a man tend to thefeeding and lowering the labor cost of operating the machine.

Another object is to devise a baler in which the feeding mechanism isautomatically slowed up in speed as the plunger begins its forwardstroke and speeded up while the plunger is dwelling at the rear of itsstroke; this is accomplished withthrough a portion of the feed chamberand the adjacent portion of-the pressing chamber. N

Figure 3 is a horizontal section similar to Figure 2, showing amodification of baling chamber.

Figure 4 is a vertical sectional view showing the plunger moving forwardin the press chamber showing the division block locked up.

Figure 5 is a view similar to Figure 4 but showiIlg the plunger at theforward-most position of its stroke, showing the division block droppedonto the plunger so that, it will be dropped into the pressing chamberas the plunger is retract d.

form of an internal combustion engine.

operative position in the press chamber. Figure 7 is a view similar toFigure 6 but showing the plunger approaching the end of its forwardstroke and showing how the new charge of hay is compressed behind thedivision block and pushes the division block ahead of it.

GENERAL ARRANGEMENT The baler illustrated-in the drawings is of thetypeadapted to be drawn along the windrow in the field by a tractor orother-suitable draft source. However, the .baler is adapted forstationary use as well/ The "baler mechanism is operated by a power unitpreferably carried on the baler frame' itself and which may take fire epower unit drives both the feeding mechanism and the baling mechanism.The pick-up and feeding mechanism are carried at the side of the machineas a foldabie element adapted to be folded up into substantially avertical position for transportation or the like. The pick-up elementstransfer the hay to a relatively low feeding table upon which areoperated suitable con-- veyor means which. convey the hay deposited2,298,679 Figure 6 is a vertical sectional view showing the enmeshedwith the spaced bull gears 22 which are rotatably mounted in anysuitable manner with respect to side frame -members 23, as by means ofstubshafts 24 and 25 which are fixedly thereon into the side opening ofthe longitudinally disposed baier mechanism when the plunger of thebaler is fully retracted. The speed of operation of the feeding deviceis controlled in accordance with the movement of the pressing plunger,being fast while the plunger is dwelling near the rear end of its strokeand being slowed up materially as the plunger comes forward in apressing operation. Suitable overhead auxiliary feeding mechanism may beprovided above the feeding table for beating the hay downwardly andforwardly into the pressing chamber.

The baler itself comprises a longitudinally disposed pressing chamber inwhich reciprocates a pressing plunger provided with shearing meanscooperating with stationary shearing means to make a clean cut of thehay at each forward stroke of the plunger whereby the insertion of thedivision block is not interfered with. The pressing chamber isconstricted at its extreme outer end by suitable means and the bales arepressed rearwardly of the machine, each bale as it is formed serving asan abutment for theformation of a succeeding bale and being thereafterexpelled outwardly through the extreme outer end of the baler. In thisspecification, the movement of the press plunger during the pressingstroke will be spoken of as a forward movement of the plunger althoughin reality it is moving towards the rear end of the machine as it isdrawn through the field.

Press and plunger operating mechanism Referring to the drawings indetail,- reference numeral i ll denotes an internal combustion powerunit carried at the forward end ofthe machine as on longitudinal framemembers H and driving a drive pulley l2. A clutch operated-by handle i3may be interposed between engine Ill and drive pulley I 2 if desired.Drive pulley I2 is adapted to drive pulley l4 by means of the multipleV-belts i5. Pulley l41is mounted on a transverse shaft it provided, witha flywheel I! and also provided with a pinion i8 enmeshing with arelatively largetoothed pinion IS on transverse shaft 20. Upon shaft 20are mounted two pinions 2| of relatively small size which are attachedto their respective bull gears 22 and which serve to drive mechanismmore fully described below. These stubshai'ts 24 and 25 do not projectinwardly of the bull gears 22 so that the space between gears 22 is freefor a purpose supported upon the machine in any suitable.

manner. The press comprises a rectangular boxlike device having asubstantially closed top 21 and bottom 28, and having side members 29which leave the sides open for access by'the workmen for the insertionof the tyingwires. The press plunger is designated generally as 30 andis adapted to be moved to and fro in the forward end of the press 26 bymeans of the bull gears 22. The plunger 30 is shaped to approximatelyconform to the inner cross section of the press Hand is provided with arearwardly extending central ear 3| which is preferably integral withthe one piece plunger head 32 which may desirably be of cast iron.Pitman 33 is pivoted to the ear 3| by means of pivot bolt 34 and ispivoted to one end of a toggle link 35 as at 36. Member 35 is providedwith a stationary pivot point 31 about which it is free to rotate. Asecond pitman member 38 is disposed between bull gears 22 and toggielink 35, being pivoted to bull gears 22 through the intermediaryof acrank pin 38 and being pivoted to toggle link 35 wards pivot point 81and is also disposed slightly outwardly of the center line between pivotpoints 36 and 31 in a direction towards bull gears 22.

As a result of the linkage interposed between bull gears 22 and pressplunger 30, press plunger 30 is caused to be moved in a particularlyadvantageous manner. The angular movement of crank pin 39 with respectto bull gears 22 will, of course, be uniform'but this movement istransmitted to press plunger 30 in such a manner that press plunger 30is slowly advanced but is very rapidly retracted, thereby allowing amaximum period of time for the charging of the space ahead of the pressplunger. In addition, the press plunger will substantially dwell at therearmost portion of its stroke for a considerable period of time andthis dwell coupled with the slow forward movement of the plunger allowsa maximum amount of bay. to be inserted for each stroke of the plunger.

Feeder and pick-up and drives therefor ried at the right hand side ofthe machine, their outer end being supported by means of verticallyadjustable wheels 42.

The pick-up mechanism is disposed at the forward end of the assembly andcomprises a transversely disposed shaft 46 upon which is fixedly mounteda rotatable reel 41 provided with end members 49 which are fixedlyattached to shaft 46. Between the ends of the end members 49 aredisposed rotatable pipe shafts 48 upon which are fixedly mounted springpickup teeth 60. Preferably, these teeth 50 are formed in pairs,eachpair being formed from a single piece of spring wire which is coiledaround shaft 48 for a revolution and is then coiled in a reversedirection for a second revolution, the middle being fixedly attached toshaft 48 many suitablemanner. The pick-up teeth are adapted to dropbelow the feed table 54 upon approaching the same.

The coil spring providing means to permit. the

' springing of the teeth or mechanical means can be provided toaccomplish this motion, thus ailowing the teeth 50 to be pulleddownwardly out of hay picked up from the ground. I

The pick-up device transfers the hay onto a transversely disposed feedtable 54 which is provided with a rear wall 5.5, an end wall 56 and insuitable manner to the front edge of the bottom plate 51 of the feedtable.

For carrying the hay deposited on the feed table into the feed openingof the press chamber, a series of feed chains 59 having upwardlyprojecting feed teeth 69 are provided lengthwise of the feed table 56.These feed chains 59 move towards the baling chamber and are mountedaround feeding sprockets Bl fixedly attached to a feeding shaft 52,which rotates in a clockwise direction, the outward ends of these chains59 being mounted around outer idling sprockets 63 which may be joumaledwith respect to the feeding and pick-up member in any suitable'manner.Feeding shaft 62 is likewise Journaled below thfloor plate 51 of thefeeding device, and units forward end there is fixedly attached a gear65 driven by a gear 65a fixedly attached to a sprocket 85?) encircled bya sprocket chain 66 also encircling -an upper sprocket 61 mounted on, arotatable crank shaft 68. Shaft 69 also drives the upper tampingmechanism and the pressing reel. The tamping mechanism comprises a pairof arms 69 disposed adjacent the mouth of the baling chamber andprovided with spring teeth 78 for engaging the hay. Shaft 68 is rotatedin a counter-clockwise direction and is provided with two crank portionsH disposed opposite one another. Arms 69 are Journaled about these crankportions ii and are pivoted at I2 to link members 13 which are pivotedat M to a stationary portion of the mechanism, namely the right handedge of the top plate 21 of the baling press chamber.

Thus, as shaft 68 is rotated in a counter-clockwise direction, thespring teeth I reach outwardp The pick-up attachment is driven by asprocket 86 fixedly mounted on the stubshaft of the left hand bull gear22, sprocket 98 driving a sprocket fll fixedly mounted on the pick-upshaft 66 through the intermediary of sprocket chain 88 which encirclessprockets" and 81. Thus the pick-up device is driven at a constant speedwhich is directly proportional .to the speed of ,bull gears .22 or ofengine ID.

The feeding mechanism is driven from stub- I shaft 25 of bull gears 22through the interposition of enmeshing elliptical gears 89 and 90, ele

liptical gear 89 being fixedly mounted on shaft 25 and elliptical gear90 being mounted on an auxiliary shaft 9| on which is fixedly mounted asprocket 92 which drives a sprocket 93 through sprocket chain 94,sprocket 93 driving shaft 68 by means of bevel gears 95 and 99, of whichbevel gear 96 is fixedly mounted on shaft 68.

Elliptical feeding gears 89 and 9|! are so timed with respect .to theangular timing of crank pin.

39 of the bull gears 22 that the feeding forks 79, the pressing reel 83,and the conveyor chains 59 of the pick-up attachment are speeded up eachtime the press plunger is away from the feed opening of the press andare slowed down 7 when the plunger .30 is across the feed opening of thepress. The coupling of the-two effects of the changing speed ofoperation of the feeding attachment and of the rapid retraction, longdwell in retracted position, and slow forward travel of the pressplunger 39 cooperate with one another to make an unusually effectivebaler which is capable of very great production. While in diagrammaticview of Figure 1 the pick-up and feeding attachment is shown separatedfrom the baling mechanism for the purposes of clarity,

it will be understood that the bottom plate 5|. of the feeding'deviceand the bottom plate 28 of the baler are on the same horizontal level.

In order to' make a clean bale and to prevent strands of hay fromprojecting across the feed ly and are then moved downwardly compressingcarrying the hay into the baling chamber. After they move inwardly tothe end of their stroke, they are withdrawn upwardly for another stroke.

Mounted on the rear end of shaft 68 is a pulley 19 which drives a belt89, in turn driving a pulley illfixedly mounted on the end of a shaft82.upon which is fixedly mounted areel of wooden paddles 83, shaft 82being journaled in any suitable manner as by means of fixed supportingarms, thusreel 83 is rotatedin a counter-clockwise direction during thefeeding operation and serves in conjunction with the tamping spring armsin to press the hay or straw downwardly 'the press without difilculty.

Thus, it will be seen that the material is fed directly into the side ofthe press and that the pick-up attachment lifts the hay only to thelevel of the floor plate 51 of the feeding mechanism, rather than up tothe top of the press as on the conventional machine.

opening of the press 26 as the plunger 30 is retracted, a pair ofshearing knives are provided on the side of the press opening. Theseknives comprise a stationary shearing blade 91 fixedly mounted at theextreme forward edge of the feed opening (Figures 1 and 2). Acooperating shear blade 98 is fixedly mounted on the'adiacentside of theplunger head 32 and these blades'fl'l and 98 cut off the charge eachtime the plunger makes a pressing movement, thus making it unnecessarytolet the press run idle for two or three plunger strokes in order toclear the bale before dropping the division block. Plunger .90 comprisesfour rearwardly extending tail members 99 (Figure 2) which are adaptedto guide the plunger in its travel in the press chamber, and a left handside plate 100 which is adapted to close the feed opening as the plungermoves forward in its pressing stroke. The plunger a is also reinforcedby truss members |0l disposed in any suitable manner in its tailsection. Fixedly or integrally extending from plungerhead 32 are a pairof ears I02 which pivotally carry a roller I03 which is disposed on theopposite side of the plunger from'knife 98. .A roller guide I'll isfixedly mounted at its rear end as at M5 to the right hand side'of thepress chamber, its inrward end being provided with an extens on 1' 6adapted to be engaged by roller I03 and to thus resiliently press knifeblade 98 into effective shearing engagement with stationary knife 91,

u roller guide I04 being yieldable outwardly toa slight extent toprovide the desired shearing action. The forward end of roller guide I04is adapted to be adjusted inwardly or outwardly by means of a fiatmember I01 carried on a fixed bolt I provided with adjusting nuts I09ahd with a spring IIO engaging a fixed portion of the press and adaptedto urge member I01 outwardly. In this way the roller guide I04 can beadjusted transversely to keep the shear blades 90 and 91 operating atthe-proper clearance.

The tail members 99 of the plunger 30 are arranged within the balingchamber with some play sothat the plunger 30 may easily be movedforwardly and reversely within the baling chamber.

The plunger therefore has some transverse movement. When the plunger 30advances through the hay or straw the normal tendency of the strawentering the baling chamber is to move the plunger transversely of thecompression or baling chamber because of the force applied against theside wall I00. This transverse movement of the plunger 30 separates theshearing blades 9'! and 98 transversely so that a space would normallybe provided therebetween. If any space is provided between the shearingblades then their shearing action is not complete.- Unless the faces ofthe shear blades are maintained in closing sliding relationship theeffect of the straw or hay between the blades is to spread the samesothat it is bent or wedged between. the faces of the shear blades.

To prevent this action the applicant provides the plunger I06 which isadjustable transversely with respect to the compression chamber and theplunger 30 to position the shear-blade 98 with regard to the shear blade91 so that a proper working clearance is provided therebetween tocleanly shear the straw within the compression chamber. When the plunger30 moves forward the roller I03 engages the plunger I06 before the shearblade 98 is adjacent the shear blade 91 to properly position the blade90 so that it will be in shear relationship with the blade 91. The shearblade 08 is maintained in this position as long as the roller I03engages the plunger I06, whereby a proper shear action is maintainedbetween the shear blades 91 and 98.

Automatic block dropping device trip the block dropping device: in amanner which will-presently appear. Serrated wheel III is adapted to berotated by the compressing movement of the hay within the baling chamber26, being rotated in a counter-clockwise direction. The length of thebale is gauged by the circular mally supported by a pair of rods II9extending through one side of trough member 0. These rods II9 remain inplace while the bale is being built up and when the bale has been builtup, wheel III will have rotated until pin 4' will have tripped arm I20.The tripping mechanism comprising the wheel III and the arm I willpermit release of the pin I23 from the locking portion I24 of arm, thusallowing pin I23 and arm I25 upon which pin I23 is fixedly mountedand-to which slide rods H9 are fixedly attached to move forwardly. ArmI25 is fixedly mounted on-a crank member I26 whichhas a crank end I21adapted to be moved forwardly by reason of its operative interpositionbetween a pair of coil springs I28 which are mounted between two membersI29 and I30 upon an operating rod I3I. End I2! is provided with an ear45 slidably encircling rod I3I, springs I28 abutting against ear 45. RodI3I is reciprocated continuously during operation of the device byreason of its pivoted attachment toya crank member I32 (Figure 1) whichis fixedly mounted on stubshaft 24 of the right hand bull gear 22.

Thus operating rod I3I which is reciprocated continuously is ineffectiveto withdraw pins II! forwardly and to therebydrop the division block II5onto plunger 80 except when wheel III has made a complete revolutioncorresponding to the Upon the retraction of plunger 30 the block III5 isdropped from the position of Figure 8 to the position of Figure 9. Eventhough pin II4 trips arm I 2I at any other time than when plunger 30 isforward of the opening II8, the operating interconnection is such thatrod I3I would be moving rearwardly and thus would be tending to pull armI25 rearwardly towards opening H0, and thus tending to push the sliderods I I9 rather than withdraw them from the trough IIB.

To support. the division block II5 against tilting rearwardly after ithas been dropped into the press chamber, there is provided a block hookI40 (Figure 6), the hook end of which is projected into the interior ofthe press chamber by means of a spring.

In order to hold the compressed charges of hay, or the division block .II5 from coming rearwardly as plunger 30 is retracted, spring pressedhook arm I42 (Figures 4 to 7) 'are provided on the top and bottom ofthepress chamber, the

wheel III and this wheel III is made adjustable in diameter so that thelength of the bale may be adjusted as desired.

1 The division block I I5 is placed manually in a trough II6 formed onthe top'of the press chamber and reelines therein slightly rearwardlyagainst a supporting member III. Trough H0 communicates with an openingII8 inthe top of the press chamber, this opening H8 being adapted toallow the division block to pass down- .wardly therethrough at theproper. time into the upper pair of hook members being formed so as tosurround the division block opening IIO. Preferably, springpressed hookmembers I 43 are also provided opposite hook members I42 and upon thesides of the press (Figure 2).

The automatic block dropper described herein is rendered completelysuccessful due to the fact that the bale chamber is cleaned after eachstroke by reason of the operation of. the knives 91 and98 describedabove so that the block has a free space into which to go and may bedropped upon any retraction stroke of the plunger 30. Thus it is notnecessary to run the press two or three idle strokes without feedingmaterial through it, in order to get the division block in place. Withprior balers, it was necessary to the baling chamber-and adapted toconstrict this end of the baling chamber so as to retain the baletherewithin to form an abutment against which a succeeding bale may bepressed. This toggle mechanism comprises arms I49 connected to the topand bottom of the press chamber and to an internally threaded member lllwithin adapted to reciprocate within said chamber,

' shearing means operated by said plunger for shearing materialextending from said chamber when said plunger makes a forwardstroke,'and 3 means in the path of travel of the plunger toautomatically directly app y pressure upon said shearing means in-adirection normal to the low nism I48 disposed on each side of the openend of which is disposed a screw threaded adjusting ing on allfoursides.

GENERAL The V-belt main drive embodying multiple V-belts l5 providesasafety device since the large pulley N which the V-belts drive alsoacts as a friction relief clutch to prevent damage to the baler in caseany obstruction should be encountered in any portion thereof.

It will be understood that plunger .30 may be cut away as at- I55(Figures 4 to 7) to permit it to pass by hook members l2 and 3.

In Figure 3 there is portrayed an improved and preferred form of balingchamber which is narrowed at the point I56 which is located immediatelyafter the point where the division block I I5 is dropped andon'thesideppposite the feed opening, thus preventing material being baled fromcrowding around the block H5 and making it difiicult for the operator tofind the block for inserting wires for tying. This construction alsogives plenty of clearance for the block H5 to drop into position throughopening H8. The plunger 30 is correspondingly cut away at I59.

shearing plane when the shearingnieans is operated by said plunger. j g

3. In. a, baler, a pressing chamber having a feed opening in a wallthereof, a pressing plunger adapted to reciprocate within said chamber,shearing means having blades, oneof said blades, being carried by saidplunger and operated concomitantly with the forward stroke of saidplunger for shearing material extending from said chamber during saidstroke, and means for ap-t plying pressure upon said shearing meanscomprising a plunger engaged by said pressing plunger during the forwardstroke of the latter when said blades are in adjacent relationship.

' 4.'In a baler, a pressing chamber having a feed opening in a wallthereof, a pressing plunger adapted to reciprocate within said chamberto compress material therein and reciprocate across said feed opening, ashear blade positioned adiacent the forward edge of said feed opening, a

shear blade operated by said plunger concomitan'tly with the forwardstroke thereof and adapt ed to cooperate with saidfirst mentioned shearblade to shear material extending through said feed opening during theforward stroke of said plunger, a member supported adJacent a wall of Iwish it to be understood that I intend to include as within my inventionsuch modifications as may .be necessary to adapt the same to varyingconditions and uses and as fall within the terms or the spirit of theappended claims.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patentis:

1. In a baler, a pressing chamber having a feed opening in the wallthereof, a pressing plunger adapted to reciprocate longitudinally ofsaid chamber through a path which includes the forward edge of saidopening, said plunger being adapted to compress material fed throughsaid opening into said chamber in front of said plunger to a pointbeyond the forward edge of said opening, a stationary shear blademounted on the forward edge of said opening, and a shear blade carriedon said plunger and adapted to cooperate with said first-named shearblade to shear off cleanly the material protruding through said openingas said plunger -makes its forward stroke, and means for firstautomatically applying pressure to the plunger and the second blade andmaintaining said pressure during shearing action.

2. In a baler, a pressing chamber having a feed opening in a wallthereof, a pressing plunger engaging said member to move said plungertransversely to apply pressure upon one of said blades and increase theshearing action between said blades.

5. In a baler, a pressing chamber having a feed opening in awallthereof, a pressing plunger adapted to reciprocate within saidchamber to compress material therein and reciprocate across saidfeedopening, a shear blade positioned adjacent the forward edge of saidfeed opening, a shear blade carried by said plunger and adapted tocooperate with said first mentioned shear blade to shear materialextending through said feed said blades comprising a member supportedadjacent a wall of said chamber, and roller means carried on saidplunger for engaging said mem adapted to reciprocate within said chamberto I compress material therein and reciprocate across said feed opening,a stationary'shear blade positioned' adjacent the forward edge of saidfeed opening, a shear blade carried by said plunger' and adapted tocooperate with said first men'- tioned shear blade to shear materialextending through said .feed opening during the forward stroke of saidplunger, and means to apply shearing pressure upon said shearing bladesin a direction normal to the shearing plane during the final portion ofsaid stroke when said blades are in adjacent relationship comprising-amember supported adjacent a wall of said chamber 09- posite the walladjacent which the stationary shear blade is positioned, said memberbeing so positioned adjacent said wall that said plunger engages saidmember during the final portion of the pressing stroke when said bladesare inadjacent relationship.

7. Ina baler, a pressing chamber having a feed opening in a wallthereof, a pressing plunger adapted to reciprocate within said chamberto compress material therein and reciprocate across said feed bpening, ashear blade positioned adjacent the forward edge of said teed opening, ashear blade carried by said plunger and adapted 10- to cooperate withsaid first mentioned shear blade said stroke wherein said blades are inshearing relationship.

EROS V. BARKER.

